Feed mechanism for manure spreaders



Oct. 16 1923.

, F. w. ZINT FEED MECHANISM FOR MANURE SPREADERS Filed Dec. 24 1919 2 Sheets-Sheet 1 Oct. 16 1923. I

F. W. ZINT FEED MECHANISM FOR MANURE SPREADERS Fil ed Dec. 24, "1919 2 Sheets-Sheet 2 Patented Get. 1 6, 1923. i

co 11m, OFCI-IICAGO, ILLINOISX-A oonronnrron 0F I LrNoIs;

'nnnngnrnonnnisra"non MANURE srnnnjnnas I o Ath nian fi1eiiDeeember 24,119 19;[s eam347,143.

To ail whomit may concern.

Be it known that I, FRANKXV. citizen of the .United States, jresiding at Springfieldf'in' the county of Sangarnon and State oat Illinois, haveinvjented certain new and useful Improvements inf Feed Mechanis'rn for Manure Spreaders, of which the following is ar-specification. i g r V 'This' inyention relateslto lm'pro'vements' 1n manure spreaders, and is concerned more particularly with thefeed me'chanisrfi thereof. f 7 Y "The object of the invention is theprovision of simple and novetnieans for im parting movement tothe apron whichsup ports the load, and'to so constructsuc'h ac-- tuating means that the feeding movement of the apron shall be uniform, and free from jerks and jars. 1 j 1 W Other objects and advantages will appear as the nature of the improven'ients is better understood, the in'vention'consisting substantially in the novelconstructiom-combina- I tion and arrangement' of parts hereinafter fully described, illustrated, in the accompanying drawingsfand" finally pointed out in the appended claims. In thisconnection it is tobe-understood that the formofthe invention herein shown and described is but a preferred embodiment thereof, and,the refore, is not to be consideredin a restrict ve or limiting sense.

. mechanism;

axle'has mounted thereon the usual pair of, ground wheels '14-. The ground wheels 14 In the drawings;* '1 1 1 Fig. 1 is a sideelevation of the rear end of a manure spreader embodying the herein described invention. parts being broken away for clear'ness ofillustratifon;

Fig. 2 is a planviewyot so muchfofthe structure disclosed inFl'g. 1 as 1s necessary.

to indicate the invention; and 1 3 -Fig.3' is a diagrammatic view' illustrating the wheel travel in relation to'the 7 Referring now in detail to the accompanying drawings, the numeral 10 designates the frame of the herein described machiijie'a, which frame is provided at itsrear end with a rotating beater 11 and likewise with a i I traveling apronl2 tor-supportingthe load.

The rear axle of the machine isdejsignated by the numeral 13, said axle belng arranged at theunder side ofsaid frame, and said pawl .17,.t'l1e rear end of flattened' to provide an g which co-operates with the teeth of said have fixed connection with the axle are free to rotate thereon.

For imparting. the necessary feed to the iitnrnois, Assxenon T0 MONTGOMERY WARD supporting 'apr0n 12 a ratchet wheel '15 is connected to one end of'the' rear shaft '16 15 is operatedby i p w b in engaging toef1'8 I over which said supporting apron operates, and said ratchet wheel 15 wheel. Thepawl l7 is rec'eived.by a guide 1910mm at the s ide ofthe frame l0,-a nd theforward end ot jsaid pawl is pivotally connected to the upwardly-extending armof a bell-crank lever 20'." This lever'is mounted to oscillate on "an Toutwardlyextending stud 21 carried bya bracket22, whichbracket is alsoconnec'ted to theside of the frame 10, I

and said bell-crank lever 20 hasjjournalled in its horizontal 'arm a follower roller 23 "whichrides over the lobes ofan actuating cam 24:. This cainis' fixedly connected to'the axle 13, andthe same is operatedfrornthe adjacent ground wheel 14: {through the medium of dog mechanism 25.: The latter may be of any approvedconstruction. The bell-crank lever '20. is i v intermediate the ratchet wheel '15" and the cam 24, and the-horizontal .arrn' thereof overhangs said cam: and j'therebyfis main-' tained inoperative relationthereto.

.. To prevent reverse movement; of the p t fih d do s 2 and 27 is employed- These dogs are pivot-y ratchet wheel 15 a positioned at a point ally mounted on aprojecting stud 28','the

dog 27- b'eing bent outwardly as-illustrated in Fig. 2, in forder', 'to overlap the dog 26,

and thereby be positioned for engagement 7 with the teeth of the wheel 15'.

" These 'dogs engage the teethof the ratchet'ivheel' 15*at' different points to finsure'fagainst reverse movement of sald'wheel', one serving tohold the tooth of the wheel with whichit is 'engaged, while the other is riding from the tooth with whichit wasfenga'ged overjon to mounted, at 30, on 10; Thevertical arm:

; chine for convenient manipulation by the i .l horizontal arm of the bell-crank'lever 20.

operator,'the horizontal arm of the lever 29 projecting rearw-ardly and being disposed beneath a projecting'stud 32carried by the This stud may beconveniently formed by I extending the axis of the follower roller 23,

and to facilitate the movement of the stud 32 with respect to the horizontal arm of said lever 29 the rear end of that arm is curved slightly downwardly, as clearly illustrated in Fig. 1. I

spectively attheir point of departure from the hub and ending at their high point,

' traverse an angle of approximately ninety degrees relative to the axis of the shaft 13.

7 It will be, observed also that the forward portions of these active edges of the cam lobes extend at a smaller angle relatlve to I the axis ofth'e shaft 'than 'do their rearward portions. The last mentionedv characteristicofthe 'cainlobes produces first an acceleratingmovement of the bell crank lever 20, foli lowed'byanegativeacceleration in its move 'ment, and this is effective 1n the intermittent operation of the apr-on'12 to effect a gradual increase 'in'speed fromrest followed by a gradual decrease in speed to rest. The wide angular. extent of the effective cam edges permits this graduation of speed, and at the same timeprolongs the periods in which the apron'is in motion, thereby utilizing the maximum travel of the ground wheels, between 'the periods when the apron is at rest,

I The effective and desired-result of this arrangement is ithe elimination of pronounced jerking or sudden starting and stopping in the movement of the apron, without requiring diiplicatioii of the means for. transmitting power fromthe' cam to the ratchet wheel. H

T In the operation of the herein describcd mechanism, it beingqassumed that the machine is loaded withmanure, and the same is 7 being transported over the; ground, the wheel l iladjacent to the cam 24ccauses the latter to rotate as the machineis moved forwardly. As each of the lobes of the cam 21 engages the bell-crank lever 20, the latter is. swung upon its pivot so asto move the pawl 17 7 rearwardly;

The toe 18io f said pawl, being in engagement with the ratchet wheel 15, operates the ratchet wheel and thereby moves the apron 12 to convey the load rearwardly to the beater 11 through the medium of 'which latter instrumentality the-manure is distributed. ,7 As the follower roller 23 follow's'the contour of the cam 24 it will beseen that the pawl-.17. is drawn forwardly when said-roller reaches-the low points of said cam and this movement 7 continues so leng as-the machine is being drawn forwardly. The horizontal arm ofthe leverf29 acts in the natureof a stop for controlling movement of the bell-crank lever 20, and thereby limits movement of the pawl 17 in relation to the ratchet wheel 15. The extent of ,movement of the lever 20 may be changed by shifting the bell-crank lever 29 to various -,positions, and=this determines the extent of throw of the horizontal arm of the lever 20 in relationto the cam 24:. The number of notches of-the ratchet wheel 15 engaged by the pawl 17 is thereby easily determined and p I re ulated. It will beob'served,thatithe 'a'ctive'edge's' of the lobes of the cam 24, beginning relBy referring-Ito Fig. 3the-arcuate line A represents the distance 1 traveled by. the

groundwheels when the mechanism is set to tuating said ratchet WheeL-a bell-crank lever i pivoted at a point. intermediate of said ratchet wheel and said cam, oneof the arms of said bell-crank lever-being connected to saidfeed pawl, the other arm being arranged for operation by said cam, and a second bellcrank lever having oneof its arms projected into the path of movement of the first mentioned bell-crank lever for cooperative con.

tact therewith to control movement thereof in relation to said cam, whereby to vary the feed-of saidpawl. I 2. :In a feeding mechanism of the class described, the combination with a traveling load support, a ratchet wheel for act-uating the same, and a cam, of a feed pawl for actuating said ratchet wheel, a bell-crank-lever pivoted .aa point intermediate of said ratchet wheel and said cam, oneof the'arms of said bell-cranklever. being connected to said feed pawl, the other arm of said bellcrank lever being arranged for operation by said cam, a projection carried by said bellcrank, and a pivoted stop device niount'ed adjacent tosaid bellcranl:' lever and, projecting into operative contact with thepro jection of said bell-crank lever to control movement of the latter with relation to the cam, whereby to vary the feed of said pawl.

3. In a feeding mechanism of the class described, the combination with a traveling loadzsupport, of a ratchetwheel for actuatingthe same, acam, a feed pawl for accuating said ratchet wheel, a. bell-cranklever pivoted at a point intermediate of said ratchet wheel and said cam, one of thearms of said bell-crank lever being connected to c said cam,

hanging arm of said bell-crank lever, a sec ond bell-crank lever pivoted adjacent to'said cam, the horizontal arm offsaid second bellcrank lever being projected into operative v crank lever being arranged for operation by v said feed pawl, the other arm ofsaid bellcrank lever being arranged for operation by a projection carried by the overcontact with said projection of the first bellcrank lever to control movement of the lat- 10 ter in relation to the cam whereby t0 vary; the feed of said pawl, and means connected to said second bell-crank lever for operating the same. 1

4. In a feeding mechanism of the class described, the combination With a traveling load support, of a ratchet Wheel for actuati ing the same, a cam, a feed pawl-for actuat-g 111g. said ratchet wheel, and a bell-crank lever pivoted at a point intermediate e f-said ratchet wheel and said cam, one'of the arms of said bell-crank'lever being connected to said feed pawl the other arm of 'saidcbellsaid cam, a projection carried bythe overhanglng arm of said bell-crank lever, a second bell-crankl'ever pivoted adjacent to said cam, the horizontal arm of said second belle crank lever being "projected into operative contact with said projection of the'first bellcrank lever to controlmovement of the latter in relation to the 'camwhereby to vary" the feed of said pawl, and nie-ansconnected to said secon'd'bell-crank lever for operating the same,the rear end of the'projecting arm n of said. secondbell-crank lever being curved downwardly to facilitate movement of the projection of the first bell-crank lever with respectthereto.

5. In a manure spreader, the combination with a traveling load support, a ratchet a feed pawl for actuating said ratchet wheel,

crank, whereby to vary the throw of said bell crank and thereby tofvary the move- I ment' of said vfeed pawl.

p a FRANK ZINT. "Witnesses; I p j V C. BQ'WUNDER ICH, V

H. JABUscH;

In testimony whereof have hereunto slgned my name 11 the presence of two sub scribing Witnesses. r

40. I wheel'for actuatlng the same, anda cam car-- ried by one of the axles of the spreader, of i 

